FLEXIBLE RETROFITTING AND OPTIMAL SCHEDULING OF COGENERATION SYSTEM BASED ON IMPROVED MEMETIC ALGORITHM

Wang Liming; Liu Yingming; Pang Xinfu; Wang Xiaodong; Wang Hanbo

doi:10.19912/j.0254-0096.tynxb.2024-0244

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (6) : 410-419. DOI: 10.19912/j.0254-0096.tynxb.2024-0244

FLEXIBLE RETROFITTING AND OPTIMAL SCHEDULING OF COGENERATION SYSTEM BASED ON IMPROVED MEMETIC ALGORITHM

Wang Liming^1,2, Liu Yingming¹, Pang Xinfu², Wang Xiaodong¹, Wang Hanbo¹

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Abstract

This paper aims at the problem of wind curtailment and power limitation in the cogeneration system under the “heat-oriented” operation mode in the heating season of the “Three North” regions in China. The system's flexibility is improved by introducing time-of-use electricity price and thermal comfort degree to exploit the potential of demand response and by adding a thermal storage tank and electric boiler to decouple heat and power further. An optimal scheduling method considering demand response and heat-power decoupling components is proposed. The method adopts a multi-objective hierarchical sequencing method to deal with the scheduling objectives, including the quality of the scheduling solution, economy, and wind power consumption capacity. An improved memetic algorithm, which uses adaptive crossover probability and mutation probability and a simulated annealing strategy based on neighborhood exchange, is designed to solve the problem and enhance the algorithm's convergence and optimization performance. The simulation results show that the scheme can effectively improve the economic operation and wind power utilization rate of the cogeneration system, and the effect of heat-power decoupling devices is better than that of demand response.

Key words

wind power consumption / combined heat and power plants / demand-side response / improved memetic algorithm / optimal scheduling

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Wang Liming, Liu Yingming, Pang Xinfu, Wang Xiaodong, Wang Hanbo. FLEXIBLE RETROFITTING AND OPTIMAL SCHEDULING OF COGENERATION SYSTEM BASED ON IMPROVED MEMETIC ALGORITHM[J]. Acta Energiae Solaris Sinica. 2025, 46(6): 410-419 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0244

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